If you are trying to connect to an FTP server and you see an error message saying "Connection refused," it means that the FTP server is not accepting connections. This can happen for a variety of reasons, including:
The FTP server is not running: Make sure that the FTP server is running and listening for connections. If the server is not running, start it.
The FTP server is not configured to listen on the correct port: Make sure that the FTP server is configured to listen on the correct port. The default FTP port is 21, but the server may be configured to listen on a different port.
The firewall is blocking FTP connections: If you are trying to connect to the FTP server from a different machine, make sure that the firewall is not blocking FTP connections. You may need to add an exception to the firewall rules to allow FTP traffic.
The FTP server is configured to allow connections only from certain IP addresses: If the FTP server is configured to allow connections only from certain IP addresses, make sure that the machine you are using to connect is included in the list of allowed IP addresses.
There is a network issue: If none of the above solutions solve the problem, there may be a network issue preventing the connection. Check the network settings and try again.